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Posted to common-dev@hadoop.apache.org by "Todd Lipcon (Resolved) (JIRA)" <ji...@apache.org> on 2012/04/20 04:36:44 UTC

[jira] [Resolved] (HADOOP-8258) Add interfaces for compression codecs to use direct byte buffers

     [ https://issues.apache.org/jira/browse/HADOOP-8258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon resolved HADOOP-8258.
---------------------------------

    Resolution: Duplicate

Resolving as dup - please see HADOOP-8148.
                
> Add interfaces for compression codecs to use direct byte buffers
> ----------------------------------------------------------------
>
>                 Key: HADOOP-8258
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8258
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io, native, performance
>    Affects Versions: 3.0.0
>            Reporter: Todd Lipcon
>
> Currently, the codec interface only provides input/output functions based on byte arrays. Given that most of the codecs are implemented in native code, this necessitates two extra copies - one to copy the input data to a direct buffer, and one to copy the output data back to a byte array. We should add interfaces to Decompressor/Compressor that can work directly with direct byte buffers to avoid these copies.

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